1 /* 2 BlueZ - Bluetooth protocol stack for Linux 3 Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved. 4 5 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License version 2 as 9 published by the Free Software Foundation; 10 11 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 12 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 13 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. 14 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY 15 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES 16 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 17 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 18 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 19 20 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, 21 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS 22 SOFTWARE IS DISCLAIMED. 23 */ 24 25 #ifndef __HCI_CORE_H 26 #define __HCI_CORE_H 27 28 #include <net/bluetooth/hci.h> 29 #include <net/bluetooth/hci_sock.h> 30 31 /* HCI priority */ 32 #define HCI_PRIO_MAX 7 33 34 /* HCI Core structures */ 35 struct inquiry_data { 36 bdaddr_t bdaddr; 37 __u8 pscan_rep_mode; 38 __u8 pscan_period_mode; 39 __u8 pscan_mode; 40 __u8 dev_class[3]; 41 __le16 clock_offset; 42 __s8 rssi; 43 __u8 ssp_mode; 44 }; 45 46 struct inquiry_entry { 47 struct list_head all; /* inq_cache.all */ 48 struct list_head list; /* unknown or resolve */ 49 enum { 50 NAME_NOT_KNOWN, 51 NAME_NEEDED, 52 NAME_PENDING, 53 NAME_KNOWN, 54 } name_state; 55 __u32 timestamp; 56 struct inquiry_data data; 57 }; 58 59 struct discovery_state { 60 int type; 61 enum { 62 DISCOVERY_STOPPED, 63 DISCOVERY_STARTING, 64 DISCOVERY_FINDING, 65 DISCOVERY_RESOLVING, 66 DISCOVERY_STOPPING, 67 } state; 68 struct list_head all; /* All devices found during inquiry */ 69 struct list_head unknown; /* Name state not known */ 70 struct list_head resolve; /* Name needs to be resolved */ 71 __u32 timestamp; 72 bdaddr_t last_adv_addr; 73 u8 last_adv_addr_type; 74 s8 last_adv_rssi; 75 u32 last_adv_flags; 76 u8 last_adv_data[HCI_MAX_AD_LENGTH]; 77 u8 last_adv_data_len; 78 bool report_invalid_rssi; 79 bool result_filtering; 80 s8 rssi; 81 u16 uuid_count; 82 u8 (*uuids)[16]; 83 unsigned long scan_start; 84 unsigned long scan_duration; 85 }; 86 87 struct hci_conn_hash { 88 struct list_head list; 89 unsigned int acl_num; 90 unsigned int amp_num; 91 unsigned int sco_num; 92 unsigned int le_num; 93 unsigned int le_num_slave; 94 }; 95 96 struct bdaddr_list { 97 struct list_head list; 98 bdaddr_t bdaddr; 99 u8 bdaddr_type; 100 }; 101 102 struct bt_uuid { 103 struct list_head list; 104 u8 uuid[16]; 105 u8 size; 106 u8 svc_hint; 107 }; 108 109 struct smp_csrk { 110 bdaddr_t bdaddr; 111 u8 bdaddr_type; 112 u8 type; 113 u8 val[16]; 114 }; 115 116 struct smp_ltk { 117 struct list_head list; 118 struct rcu_head rcu; 119 bdaddr_t bdaddr; 120 u8 bdaddr_type; 121 u8 authenticated; 122 u8 type; 123 u8 enc_size; 124 __le16 ediv; 125 __le64 rand; 126 u8 val[16]; 127 }; 128 129 struct smp_irk { 130 struct list_head list; 131 struct rcu_head rcu; 132 bdaddr_t rpa; 133 bdaddr_t bdaddr; 134 u8 addr_type; 135 u8 val[16]; 136 }; 137 138 struct link_key { 139 struct list_head list; 140 struct rcu_head rcu; 141 bdaddr_t bdaddr; 142 u8 type; 143 u8 val[HCI_LINK_KEY_SIZE]; 144 u8 pin_len; 145 }; 146 147 struct oob_data { 148 struct list_head list; 149 bdaddr_t bdaddr; 150 u8 bdaddr_type; 151 u8 present; 152 u8 hash192[16]; 153 u8 rand192[16]; 154 u8 hash256[16]; 155 u8 rand256[16]; 156 }; 157 158 struct adv_info { 159 struct list_head list; 160 bool pending; 161 __u8 instance; 162 __u32 flags; 163 __u16 timeout; 164 __u16 remaining_time; 165 __u16 duration; 166 __u16 adv_data_len; 167 __u8 adv_data[HCI_MAX_AD_LENGTH]; 168 __u16 scan_rsp_len; 169 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH]; 170 }; 171 172 #define HCI_MAX_ADV_INSTANCES 5 173 #define HCI_DEFAULT_ADV_DURATION 2 174 175 #define HCI_MAX_SHORT_NAME_LENGTH 10 176 177 /* Default LE RPA expiry time, 15 minutes */ 178 #define HCI_DEFAULT_RPA_TIMEOUT (15 * 60) 179 180 /* Default min/max age of connection information (1s/3s) */ 181 #define DEFAULT_CONN_INFO_MIN_AGE 1000 182 #define DEFAULT_CONN_INFO_MAX_AGE 3000 183 184 struct amp_assoc { 185 __u16 len; 186 __u16 offset; 187 __u16 rem_len; 188 __u16 len_so_far; 189 __u8 data[HCI_MAX_AMP_ASSOC_SIZE]; 190 }; 191 192 #define HCI_MAX_PAGES 3 193 194 struct hci_dev { 195 struct list_head list; 196 struct mutex lock; 197 198 char name[8]; 199 unsigned long flags; 200 __u16 id; 201 __u8 bus; 202 __u8 dev_type; 203 bdaddr_t bdaddr; 204 bdaddr_t setup_addr; 205 bdaddr_t public_addr; 206 bdaddr_t random_addr; 207 bdaddr_t static_addr; 208 __u8 adv_addr_type; 209 __u8 dev_name[HCI_MAX_NAME_LENGTH]; 210 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH]; 211 __u8 eir[HCI_MAX_EIR_LENGTH]; 212 __u8 dev_class[3]; 213 __u8 major_class; 214 __u8 minor_class; 215 __u8 max_page; 216 __u8 features[HCI_MAX_PAGES][8]; 217 __u8 le_features[8]; 218 __u8 le_white_list_size; 219 __u8 le_states[8]; 220 __u8 commands[64]; 221 __u8 hci_ver; 222 __u16 hci_rev; 223 __u8 lmp_ver; 224 __u16 manufacturer; 225 __u16 lmp_subver; 226 __u16 voice_setting; 227 __u8 num_iac; 228 __u8 stored_max_keys; 229 __u8 stored_num_keys; 230 __u8 io_capability; 231 __s8 inq_tx_power; 232 __u16 page_scan_interval; 233 __u16 page_scan_window; 234 __u8 page_scan_type; 235 __u8 le_adv_channel_map; 236 __u16 le_adv_min_interval; 237 __u16 le_adv_max_interval; 238 __u8 le_scan_type; 239 __u16 le_scan_interval; 240 __u16 le_scan_window; 241 __u16 le_conn_min_interval; 242 __u16 le_conn_max_interval; 243 __u16 le_conn_latency; 244 __u16 le_supv_timeout; 245 __u16 le_def_tx_len; 246 __u16 le_def_tx_time; 247 __u16 le_max_tx_len; 248 __u16 le_max_tx_time; 249 __u16 le_max_rx_len; 250 __u16 le_max_rx_time; 251 __u16 discov_interleaved_timeout; 252 __u16 conn_info_min_age; 253 __u16 conn_info_max_age; 254 __u8 ssp_debug_mode; 255 __u8 hw_error_code; 256 __u32 clock; 257 258 __u16 devid_source; 259 __u16 devid_vendor; 260 __u16 devid_product; 261 __u16 devid_version; 262 263 __u16 pkt_type; 264 __u16 esco_type; 265 __u16 link_policy; 266 __u16 link_mode; 267 268 __u32 idle_timeout; 269 __u16 sniff_min_interval; 270 __u16 sniff_max_interval; 271 272 __u8 amp_status; 273 __u32 amp_total_bw; 274 __u32 amp_max_bw; 275 __u32 amp_min_latency; 276 __u32 amp_max_pdu; 277 __u8 amp_type; 278 __u16 amp_pal_cap; 279 __u16 amp_assoc_size; 280 __u32 amp_max_flush_to; 281 __u32 amp_be_flush_to; 282 283 struct amp_assoc loc_assoc; 284 285 __u8 flow_ctl_mode; 286 287 unsigned int auto_accept_delay; 288 289 unsigned long quirks; 290 291 atomic_t cmd_cnt; 292 unsigned int acl_cnt; 293 unsigned int sco_cnt; 294 unsigned int le_cnt; 295 296 unsigned int acl_mtu; 297 unsigned int sco_mtu; 298 unsigned int le_mtu; 299 unsigned int acl_pkts; 300 unsigned int sco_pkts; 301 unsigned int le_pkts; 302 303 __u16 block_len; 304 __u16 block_mtu; 305 __u16 num_blocks; 306 __u16 block_cnt; 307 308 unsigned long acl_last_tx; 309 unsigned long sco_last_tx; 310 unsigned long le_last_tx; 311 312 struct workqueue_struct *workqueue; 313 struct workqueue_struct *req_workqueue; 314 315 struct work_struct power_on; 316 struct delayed_work power_off; 317 struct work_struct error_reset; 318 319 __u16 discov_timeout; 320 struct delayed_work discov_off; 321 322 struct delayed_work service_cache; 323 324 struct delayed_work cmd_timer; 325 326 struct work_struct rx_work; 327 struct work_struct cmd_work; 328 struct work_struct tx_work; 329 330 struct sk_buff_head rx_q; 331 struct sk_buff_head raw_q; 332 struct sk_buff_head cmd_q; 333 334 struct sk_buff *sent_cmd; 335 336 struct mutex req_lock; 337 wait_queue_head_t req_wait_q; 338 __u32 req_status; 339 __u32 req_result; 340 struct sk_buff *req_skb; 341 342 void *smp_data; 343 void *smp_bredr_data; 344 345 struct discovery_state discovery; 346 struct hci_conn_hash conn_hash; 347 348 struct list_head mgmt_pending; 349 struct list_head blacklist; 350 struct list_head whitelist; 351 struct list_head uuids; 352 struct list_head link_keys; 353 struct list_head long_term_keys; 354 struct list_head identity_resolving_keys; 355 struct list_head remote_oob_data; 356 struct list_head le_white_list; 357 struct list_head le_conn_params; 358 struct list_head pend_le_conns; 359 struct list_head pend_le_reports; 360 361 struct hci_dev_stats stat; 362 363 atomic_t promisc; 364 365 struct dentry *debugfs; 366 367 struct device dev; 368 369 struct rfkill *rfkill; 370 371 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS); 372 373 struct delayed_work le_scan_disable; 374 struct delayed_work le_scan_restart; 375 376 __s8 adv_tx_power; 377 __u8 adv_data[HCI_MAX_AD_LENGTH]; 378 __u8 adv_data_len; 379 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH]; 380 __u8 scan_rsp_data_len; 381 382 struct list_head adv_instances; 383 unsigned int adv_instance_cnt; 384 __u8 cur_adv_instance; 385 __u16 adv_instance_timeout; 386 struct delayed_work adv_instance_expire; 387 388 __u8 irk[16]; 389 __u32 rpa_timeout; 390 struct delayed_work rpa_expired; 391 bdaddr_t rpa; 392 393 int (*open)(struct hci_dev *hdev); 394 int (*close)(struct hci_dev *hdev); 395 int (*flush)(struct hci_dev *hdev); 396 int (*setup)(struct hci_dev *hdev); 397 int (*shutdown)(struct hci_dev *hdev); 398 int (*send)(struct hci_dev *hdev, struct sk_buff *skb); 399 void (*notify)(struct hci_dev *hdev, unsigned int evt); 400 void (*hw_error)(struct hci_dev *hdev, u8 code); 401 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr); 402 }; 403 404 #define HCI_PHY_HANDLE(handle) (handle & 0xff) 405 406 struct hci_conn { 407 struct list_head list; 408 409 atomic_t refcnt; 410 411 bdaddr_t dst; 412 __u8 dst_type; 413 bdaddr_t src; 414 __u8 src_type; 415 bdaddr_t init_addr; 416 __u8 init_addr_type; 417 bdaddr_t resp_addr; 418 __u8 resp_addr_type; 419 __u16 handle; 420 __u16 state; 421 __u8 mode; 422 __u8 type; 423 __u8 role; 424 bool out; 425 __u8 attempt; 426 __u8 dev_class[3]; 427 __u8 features[HCI_MAX_PAGES][8]; 428 __u16 pkt_type; 429 __u16 link_policy; 430 __u8 key_type; 431 __u8 auth_type; 432 __u8 sec_level; 433 __u8 pending_sec_level; 434 __u8 pin_length; 435 __u8 enc_key_size; 436 __u8 io_capability; 437 __u32 passkey_notify; 438 __u8 passkey_entered; 439 __u16 disc_timeout; 440 __u16 conn_timeout; 441 __u16 setting; 442 __u16 le_conn_min_interval; 443 __u16 le_conn_max_interval; 444 __u16 le_conn_interval; 445 __u16 le_conn_latency; 446 __u16 le_supv_timeout; 447 __u8 le_adv_data[HCI_MAX_AD_LENGTH]; 448 __u8 le_adv_data_len; 449 __s8 rssi; 450 __s8 tx_power; 451 __s8 max_tx_power; 452 unsigned long flags; 453 454 __u32 clock; 455 __u16 clock_accuracy; 456 457 unsigned long conn_info_timestamp; 458 459 __u8 remote_cap; 460 __u8 remote_auth; 461 __u8 remote_id; 462 463 unsigned int sent; 464 465 struct sk_buff_head data_q; 466 struct list_head chan_list; 467 468 struct delayed_work disc_work; 469 struct delayed_work auto_accept_work; 470 struct delayed_work idle_work; 471 struct delayed_work le_conn_timeout; 472 473 struct device dev; 474 struct dentry *debugfs; 475 476 struct hci_dev *hdev; 477 void *l2cap_data; 478 void *sco_data; 479 struct amp_mgr *amp_mgr; 480 481 struct hci_conn *link; 482 483 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status); 484 void (*security_cfm_cb) (struct hci_conn *conn, u8 status); 485 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason); 486 }; 487 488 struct hci_chan { 489 struct list_head list; 490 __u16 handle; 491 struct hci_conn *conn; 492 struct sk_buff_head data_q; 493 unsigned int sent; 494 __u8 state; 495 }; 496 497 struct hci_conn_params { 498 struct list_head list; 499 struct list_head action; 500 501 bdaddr_t addr; 502 u8 addr_type; 503 504 u16 conn_min_interval; 505 u16 conn_max_interval; 506 u16 conn_latency; 507 u16 supervision_timeout; 508 509 enum { 510 HCI_AUTO_CONN_DISABLED, 511 HCI_AUTO_CONN_REPORT, 512 HCI_AUTO_CONN_DIRECT, 513 HCI_AUTO_CONN_ALWAYS, 514 HCI_AUTO_CONN_LINK_LOSS, 515 } auto_connect; 516 517 struct hci_conn *conn; 518 }; 519 520 extern struct list_head hci_dev_list; 521 extern struct list_head hci_cb_list; 522 extern rwlock_t hci_dev_list_lock; 523 extern struct mutex hci_cb_list_lock; 524 525 #define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags) 526 #define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags) 527 #define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags) 528 #define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags) 529 #define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags) 530 #define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags) 531 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags) 532 533 #define hci_dev_clear_volatile_flags(hdev) \ 534 do { \ 535 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \ 536 hci_dev_clear_flag(hdev, HCI_LE_ADV); \ 537 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \ 538 } while (0) 539 540 /* ----- HCI interface to upper protocols ----- */ 541 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr); 542 int l2cap_disconn_ind(struct hci_conn *hcon); 543 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags); 544 545 #if IS_ENABLED(CONFIG_BT_BREDR) 546 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags); 547 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb); 548 #else 549 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 550 __u8 *flags) 551 { 552 return 0; 553 } 554 555 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb) 556 { 557 } 558 #endif 559 560 /* ----- Inquiry cache ----- */ 561 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */ 562 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */ 563 564 static inline void discovery_init(struct hci_dev *hdev) 565 { 566 hdev->discovery.state = DISCOVERY_STOPPED; 567 INIT_LIST_HEAD(&hdev->discovery.all); 568 INIT_LIST_HEAD(&hdev->discovery.unknown); 569 INIT_LIST_HEAD(&hdev->discovery.resolve); 570 hdev->discovery.report_invalid_rssi = true; 571 hdev->discovery.rssi = HCI_RSSI_INVALID; 572 } 573 574 static inline void hci_discovery_filter_clear(struct hci_dev *hdev) 575 { 576 hdev->discovery.result_filtering = false; 577 hdev->discovery.report_invalid_rssi = true; 578 hdev->discovery.rssi = HCI_RSSI_INVALID; 579 hdev->discovery.uuid_count = 0; 580 kfree(hdev->discovery.uuids); 581 hdev->discovery.uuids = NULL; 582 hdev->discovery.scan_start = 0; 583 hdev->discovery.scan_duration = 0; 584 } 585 586 bool hci_discovery_active(struct hci_dev *hdev); 587 588 void hci_discovery_set_state(struct hci_dev *hdev, int state); 589 590 static inline int inquiry_cache_empty(struct hci_dev *hdev) 591 { 592 return list_empty(&hdev->discovery.all); 593 } 594 595 static inline long inquiry_cache_age(struct hci_dev *hdev) 596 { 597 struct discovery_state *c = &hdev->discovery; 598 return jiffies - c->timestamp; 599 } 600 601 static inline long inquiry_entry_age(struct inquiry_entry *e) 602 { 603 return jiffies - e->timestamp; 604 } 605 606 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, 607 bdaddr_t *bdaddr); 608 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, 609 bdaddr_t *bdaddr); 610 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, 611 bdaddr_t *bdaddr, 612 int state); 613 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, 614 struct inquiry_entry *ie); 615 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, 616 bool name_known); 617 void hci_inquiry_cache_flush(struct hci_dev *hdev); 618 619 /* ----- HCI Connections ----- */ 620 enum { 621 HCI_CONN_AUTH_PEND, 622 HCI_CONN_REAUTH_PEND, 623 HCI_CONN_ENCRYPT_PEND, 624 HCI_CONN_RSWITCH_PEND, 625 HCI_CONN_MODE_CHANGE_PEND, 626 HCI_CONN_SCO_SETUP_PEND, 627 HCI_CONN_MGMT_CONNECTED, 628 HCI_CONN_SSP_ENABLED, 629 HCI_CONN_SC_ENABLED, 630 HCI_CONN_AES_CCM, 631 HCI_CONN_POWER_SAVE, 632 HCI_CONN_FLUSH_KEY, 633 HCI_CONN_ENCRYPT, 634 HCI_CONN_AUTH, 635 HCI_CONN_SECURE, 636 HCI_CONN_FIPS, 637 HCI_CONN_STK_ENCRYPT, 638 HCI_CONN_AUTH_INITIATOR, 639 HCI_CONN_DROP, 640 HCI_CONN_PARAM_REMOVAL_PEND, 641 HCI_CONN_NEW_LINK_KEY, 642 }; 643 644 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn) 645 { 646 struct hci_dev *hdev = conn->hdev; 647 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) && 648 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 649 } 650 651 static inline bool hci_conn_sc_enabled(struct hci_conn *conn) 652 { 653 struct hci_dev *hdev = conn->hdev; 654 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) && 655 test_bit(HCI_CONN_SC_ENABLED, &conn->flags); 656 } 657 658 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c) 659 { 660 struct hci_conn_hash *h = &hdev->conn_hash; 661 list_add_rcu(&c->list, &h->list); 662 switch (c->type) { 663 case ACL_LINK: 664 h->acl_num++; 665 break; 666 case AMP_LINK: 667 h->amp_num++; 668 break; 669 case LE_LINK: 670 h->le_num++; 671 if (c->role == HCI_ROLE_SLAVE) 672 h->le_num_slave++; 673 break; 674 case SCO_LINK: 675 case ESCO_LINK: 676 h->sco_num++; 677 break; 678 } 679 } 680 681 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c) 682 { 683 struct hci_conn_hash *h = &hdev->conn_hash; 684 685 list_del_rcu(&c->list); 686 synchronize_rcu(); 687 688 switch (c->type) { 689 case ACL_LINK: 690 h->acl_num--; 691 break; 692 case AMP_LINK: 693 h->amp_num--; 694 break; 695 case LE_LINK: 696 h->le_num--; 697 if (c->role == HCI_ROLE_SLAVE) 698 h->le_num_slave--; 699 break; 700 case SCO_LINK: 701 case ESCO_LINK: 702 h->sco_num--; 703 break; 704 } 705 } 706 707 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type) 708 { 709 struct hci_conn_hash *h = &hdev->conn_hash; 710 switch (type) { 711 case ACL_LINK: 712 return h->acl_num; 713 case AMP_LINK: 714 return h->amp_num; 715 case LE_LINK: 716 return h->le_num; 717 case SCO_LINK: 718 case ESCO_LINK: 719 return h->sco_num; 720 default: 721 return 0; 722 } 723 } 724 725 static inline unsigned int hci_conn_count(struct hci_dev *hdev) 726 { 727 struct hci_conn_hash *c = &hdev->conn_hash; 728 729 return c->acl_num + c->amp_num + c->sco_num + c->le_num; 730 } 731 732 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle) 733 { 734 struct hci_conn_hash *h = &hdev->conn_hash; 735 struct hci_conn *c; 736 __u8 type = INVALID_LINK; 737 738 rcu_read_lock(); 739 740 list_for_each_entry_rcu(c, &h->list, list) { 741 if (c->handle == handle) { 742 type = c->type; 743 break; 744 } 745 } 746 747 rcu_read_unlock(); 748 749 return type; 750 } 751 752 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev, 753 __u16 handle) 754 { 755 struct hci_conn_hash *h = &hdev->conn_hash; 756 struct hci_conn *c; 757 758 rcu_read_lock(); 759 760 list_for_each_entry_rcu(c, &h->list, list) { 761 if (c->handle == handle) { 762 rcu_read_unlock(); 763 return c; 764 } 765 } 766 rcu_read_unlock(); 767 768 return NULL; 769 } 770 771 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev, 772 __u8 type, bdaddr_t *ba) 773 { 774 struct hci_conn_hash *h = &hdev->conn_hash; 775 struct hci_conn *c; 776 777 rcu_read_lock(); 778 779 list_for_each_entry_rcu(c, &h->list, list) { 780 if (c->type == type && !bacmp(&c->dst, ba)) { 781 rcu_read_unlock(); 782 return c; 783 } 784 } 785 786 rcu_read_unlock(); 787 788 return NULL; 789 } 790 791 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev, 792 __u8 type, __u16 state) 793 { 794 struct hci_conn_hash *h = &hdev->conn_hash; 795 struct hci_conn *c; 796 797 rcu_read_lock(); 798 799 list_for_each_entry_rcu(c, &h->list, list) { 800 if (c->type == type && c->state == state) { 801 rcu_read_unlock(); 802 return c; 803 } 804 } 805 806 rcu_read_unlock(); 807 808 return NULL; 809 } 810 811 int hci_disconnect(struct hci_conn *conn, __u8 reason); 812 bool hci_setup_sync(struct hci_conn *conn, __u16 handle); 813 void hci_sco_setup(struct hci_conn *conn, __u8 status); 814 815 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst, 816 u8 role); 817 int hci_conn_del(struct hci_conn *conn); 818 void hci_conn_hash_flush(struct hci_dev *hdev); 819 void hci_conn_check_pending(struct hci_dev *hdev); 820 821 struct hci_chan *hci_chan_create(struct hci_conn *conn); 822 void hci_chan_del(struct hci_chan *chan); 823 void hci_chan_list_flush(struct hci_conn *conn); 824 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle); 825 826 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst, 827 u8 dst_type, u8 sec_level, u16 conn_timeout, 828 u8 role); 829 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst, 830 u8 sec_level, u8 auth_type); 831 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst, 832 __u16 setting); 833 int hci_conn_check_link_mode(struct hci_conn *conn); 834 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level); 835 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type, 836 bool initiator); 837 int hci_conn_switch_role(struct hci_conn *conn, __u8 role); 838 839 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active); 840 841 void hci_le_conn_failed(struct hci_conn *conn, u8 status); 842 843 /* 844 * hci_conn_get() and hci_conn_put() are used to control the life-time of an 845 * "hci_conn" object. They do not guarantee that the hci_conn object is running, 846 * working or anything else. They just guarantee that the object is available 847 * and can be dereferenced. So you can use its locks, local variables and any 848 * other constant data. 849 * Before accessing runtime data, you _must_ lock the object and then check that 850 * it is still running. As soon as you release the locks, the connection might 851 * get dropped, though. 852 * 853 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control 854 * how long the underlying connection is held. So every channel that runs on the 855 * hci_conn object calls this to prevent the connection from disappearing. As 856 * long as you hold a device, you must also guarantee that you have a valid 857 * reference to the device via hci_conn_get() (or the initial reference from 858 * hci_conn_add()). 859 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't 860 * break because nobody cares for that. But this means, we cannot use 861 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME). 862 */ 863 864 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn) 865 { 866 get_device(&conn->dev); 867 return conn; 868 } 869 870 static inline void hci_conn_put(struct hci_conn *conn) 871 { 872 put_device(&conn->dev); 873 } 874 875 static inline void hci_conn_hold(struct hci_conn *conn) 876 { 877 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); 878 879 atomic_inc(&conn->refcnt); 880 cancel_delayed_work(&conn->disc_work); 881 } 882 883 static inline void hci_conn_drop(struct hci_conn *conn) 884 { 885 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); 886 887 if (atomic_dec_and_test(&conn->refcnt)) { 888 unsigned long timeo; 889 890 switch (conn->type) { 891 case ACL_LINK: 892 case LE_LINK: 893 cancel_delayed_work(&conn->idle_work); 894 if (conn->state == BT_CONNECTED) { 895 timeo = conn->disc_timeout; 896 if (!conn->out) 897 timeo *= 2; 898 } else { 899 timeo = 0; 900 } 901 break; 902 903 case AMP_LINK: 904 timeo = conn->disc_timeout; 905 break; 906 907 default: 908 timeo = 0; 909 break; 910 } 911 912 cancel_delayed_work(&conn->disc_work); 913 queue_delayed_work(conn->hdev->workqueue, 914 &conn->disc_work, timeo); 915 } 916 } 917 918 /* ----- HCI Devices ----- */ 919 static inline void hci_dev_put(struct hci_dev *d) 920 { 921 BT_DBG("%s orig refcnt %d", d->name, 922 atomic_read(&d->dev.kobj.kref.refcount)); 923 924 put_device(&d->dev); 925 } 926 927 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d) 928 { 929 BT_DBG("%s orig refcnt %d", d->name, 930 atomic_read(&d->dev.kobj.kref.refcount)); 931 932 get_device(&d->dev); 933 return d; 934 } 935 936 #define hci_dev_lock(d) mutex_lock(&d->lock) 937 #define hci_dev_unlock(d) mutex_unlock(&d->lock) 938 939 #define to_hci_dev(d) container_of(d, struct hci_dev, dev) 940 #define to_hci_conn(c) container_of(c, struct hci_conn, dev) 941 942 static inline void *hci_get_drvdata(struct hci_dev *hdev) 943 { 944 return dev_get_drvdata(&hdev->dev); 945 } 946 947 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data) 948 { 949 dev_set_drvdata(&hdev->dev, data); 950 } 951 952 struct hci_dev *hci_dev_get(int index); 953 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src); 954 955 struct hci_dev *hci_alloc_dev(void); 956 void hci_free_dev(struct hci_dev *hdev); 957 int hci_register_dev(struct hci_dev *hdev); 958 void hci_unregister_dev(struct hci_dev *hdev); 959 int hci_suspend_dev(struct hci_dev *hdev); 960 int hci_resume_dev(struct hci_dev *hdev); 961 int hci_reset_dev(struct hci_dev *hdev); 962 int hci_dev_open(__u16 dev); 963 int hci_dev_close(__u16 dev); 964 int hci_dev_reset(__u16 dev); 965 int hci_dev_reset_stat(__u16 dev); 966 int hci_dev_cmd(unsigned int cmd, void __user *arg); 967 int hci_get_dev_list(void __user *arg); 968 int hci_get_dev_info(void __user *arg); 969 int hci_get_conn_list(void __user *arg); 970 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg); 971 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg); 972 int hci_inquiry(void __user *arg); 973 974 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list, 975 bdaddr_t *bdaddr, u8 type); 976 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type); 977 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type); 978 void hci_bdaddr_list_clear(struct list_head *list); 979 980 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev, 981 bdaddr_t *addr, u8 addr_type); 982 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev, 983 bdaddr_t *addr, u8 addr_type); 984 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type); 985 void hci_conn_params_clear_all(struct hci_dev *hdev); 986 void hci_conn_params_clear_disabled(struct hci_dev *hdev); 987 988 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list, 989 bdaddr_t *addr, 990 u8 addr_type); 991 992 void hci_uuids_clear(struct hci_dev *hdev); 993 994 void hci_link_keys_clear(struct hci_dev *hdev); 995 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 996 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, 997 bdaddr_t *bdaddr, u8 *val, u8 type, 998 u8 pin_len, bool *persistent); 999 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1000 u8 addr_type, u8 type, u8 authenticated, 1001 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand); 1002 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1003 u8 addr_type, u8 role); 1004 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type); 1005 void hci_smp_ltks_clear(struct hci_dev *hdev); 1006 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 1007 1008 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa); 1009 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, 1010 u8 addr_type); 1011 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1012 u8 addr_type, u8 val[16], bdaddr_t *rpa); 1013 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type); 1014 void hci_smp_irks_clear(struct hci_dev *hdev); 1015 1016 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type); 1017 1018 void hci_remote_oob_data_clear(struct hci_dev *hdev); 1019 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, 1020 bdaddr_t *bdaddr, u8 bdaddr_type); 1021 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, 1022 u8 bdaddr_type, u8 *hash192, u8 *rand192, 1023 u8 *hash256, u8 *rand256); 1024 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, 1025 u8 bdaddr_type); 1026 1027 void hci_adv_instances_clear(struct hci_dev *hdev); 1028 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance); 1029 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance); 1030 int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags, 1031 u16 adv_data_len, u8 *adv_data, 1032 u16 scan_rsp_len, u8 *scan_rsp_data, 1033 u16 timeout, u16 duration); 1034 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance); 1035 1036 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb); 1037 1038 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb); 1039 1040 void hci_init_sysfs(struct hci_dev *hdev); 1041 void hci_conn_init_sysfs(struct hci_conn *conn); 1042 void hci_conn_add_sysfs(struct hci_conn *conn); 1043 void hci_conn_del_sysfs(struct hci_conn *conn); 1044 1045 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev)) 1046 1047 /* ----- LMP capabilities ----- */ 1048 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT) 1049 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH) 1050 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD) 1051 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF) 1052 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK) 1053 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ) 1054 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO) 1055 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR)) 1056 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE) 1057 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR) 1058 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC) 1059 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ) 1060 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR)) 1061 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR) 1062 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH) 1063 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO) 1064 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR) 1065 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES) 1066 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT) 1067 1068 /* ----- Extended LMP capabilities ----- */ 1069 #define lmp_csb_master_capable(dev) ((dev)->features[2][0] & LMP_CSB_MASTER) 1070 #define lmp_csb_slave_capable(dev) ((dev)->features[2][0] & LMP_CSB_SLAVE) 1071 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN) 1072 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN) 1073 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC) 1074 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING) 1075 1076 /* ----- Host capabilities ----- */ 1077 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP) 1078 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC) 1079 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE)) 1080 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR)) 1081 1082 #define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \ 1083 !hci_dev_test_flag(dev, HCI_AUTO_OFF)) 1084 #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \ 1085 hci_dev_test_flag(dev, HCI_SC_ENABLED)) 1086 1087 /* ----- HCI protocols ----- */ 1088 #define HCI_PROTO_DEFER 0x01 1089 1090 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 1091 __u8 type, __u8 *flags) 1092 { 1093 switch (type) { 1094 case ACL_LINK: 1095 return l2cap_connect_ind(hdev, bdaddr); 1096 1097 case SCO_LINK: 1098 case ESCO_LINK: 1099 return sco_connect_ind(hdev, bdaddr, flags); 1100 1101 default: 1102 BT_ERR("unknown link type %d", type); 1103 return -EINVAL; 1104 } 1105 } 1106 1107 static inline int hci_proto_disconn_ind(struct hci_conn *conn) 1108 { 1109 if (conn->type != ACL_LINK && conn->type != LE_LINK) 1110 return HCI_ERROR_REMOTE_USER_TERM; 1111 1112 return l2cap_disconn_ind(conn); 1113 } 1114 1115 /* ----- HCI callbacks ----- */ 1116 struct hci_cb { 1117 struct list_head list; 1118 1119 char *name; 1120 1121 void (*connect_cfm) (struct hci_conn *conn, __u8 status); 1122 void (*disconn_cfm) (struct hci_conn *conn, __u8 status); 1123 void (*security_cfm) (struct hci_conn *conn, __u8 status, 1124 __u8 encrypt); 1125 void (*key_change_cfm) (struct hci_conn *conn, __u8 status); 1126 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role); 1127 }; 1128 1129 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status) 1130 { 1131 struct hci_cb *cb; 1132 1133 mutex_lock(&hci_cb_list_lock); 1134 list_for_each_entry(cb, &hci_cb_list, list) { 1135 if (cb->connect_cfm) 1136 cb->connect_cfm(conn, status); 1137 } 1138 mutex_unlock(&hci_cb_list_lock); 1139 1140 if (conn->connect_cfm_cb) 1141 conn->connect_cfm_cb(conn, status); 1142 } 1143 1144 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason) 1145 { 1146 struct hci_cb *cb; 1147 1148 mutex_lock(&hci_cb_list_lock); 1149 list_for_each_entry(cb, &hci_cb_list, list) { 1150 if (cb->disconn_cfm) 1151 cb->disconn_cfm(conn, reason); 1152 } 1153 mutex_unlock(&hci_cb_list_lock); 1154 1155 if (conn->disconn_cfm_cb) 1156 conn->disconn_cfm_cb(conn, reason); 1157 } 1158 1159 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status) 1160 { 1161 struct hci_cb *cb; 1162 __u8 encrypt; 1163 1164 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) 1165 return; 1166 1167 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00; 1168 1169 mutex_lock(&hci_cb_list_lock); 1170 list_for_each_entry(cb, &hci_cb_list, list) { 1171 if (cb->security_cfm) 1172 cb->security_cfm(conn, status, encrypt); 1173 } 1174 mutex_unlock(&hci_cb_list_lock); 1175 1176 if (conn->security_cfm_cb) 1177 conn->security_cfm_cb(conn, status); 1178 } 1179 1180 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status, 1181 __u8 encrypt) 1182 { 1183 struct hci_cb *cb; 1184 1185 if (conn->sec_level == BT_SECURITY_SDP) 1186 conn->sec_level = BT_SECURITY_LOW; 1187 1188 if (conn->pending_sec_level > conn->sec_level) 1189 conn->sec_level = conn->pending_sec_level; 1190 1191 mutex_lock(&hci_cb_list_lock); 1192 list_for_each_entry(cb, &hci_cb_list, list) { 1193 if (cb->security_cfm) 1194 cb->security_cfm(conn, status, encrypt); 1195 } 1196 mutex_unlock(&hci_cb_list_lock); 1197 1198 if (conn->security_cfm_cb) 1199 conn->security_cfm_cb(conn, status); 1200 } 1201 1202 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status) 1203 { 1204 struct hci_cb *cb; 1205 1206 mutex_lock(&hci_cb_list_lock); 1207 list_for_each_entry(cb, &hci_cb_list, list) { 1208 if (cb->key_change_cfm) 1209 cb->key_change_cfm(conn, status); 1210 } 1211 mutex_unlock(&hci_cb_list_lock); 1212 } 1213 1214 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, 1215 __u8 role) 1216 { 1217 struct hci_cb *cb; 1218 1219 mutex_lock(&hci_cb_list_lock); 1220 list_for_each_entry(cb, &hci_cb_list, list) { 1221 if (cb->role_switch_cfm) 1222 cb->role_switch_cfm(conn, status, role); 1223 } 1224 mutex_unlock(&hci_cb_list_lock); 1225 } 1226 1227 static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type) 1228 { 1229 size_t parsed = 0; 1230 1231 if (data_len < 2) 1232 return false; 1233 1234 while (parsed < data_len - 1) { 1235 u8 field_len = data[0]; 1236 1237 if (field_len == 0) 1238 break; 1239 1240 parsed += field_len + 1; 1241 1242 if (parsed > data_len) 1243 break; 1244 1245 if (data[1] == type) 1246 return true; 1247 1248 data += field_len + 1; 1249 } 1250 1251 return false; 1252 } 1253 1254 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type) 1255 { 1256 if (addr_type != ADDR_LE_DEV_RANDOM) 1257 return false; 1258 1259 if ((bdaddr->b[5] & 0xc0) == 0x40) 1260 return true; 1261 1262 return false; 1263 } 1264 1265 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type) 1266 { 1267 if (addr_type == ADDR_LE_DEV_PUBLIC) 1268 return true; 1269 1270 /* Check for Random Static address type */ 1271 if ((addr->b[5] & 0xc0) == 0xc0) 1272 return true; 1273 1274 return false; 1275 } 1276 1277 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev, 1278 bdaddr_t *bdaddr, u8 addr_type) 1279 { 1280 if (!hci_bdaddr_is_rpa(bdaddr, addr_type)) 1281 return NULL; 1282 1283 return hci_find_irk_by_rpa(hdev, bdaddr); 1284 } 1285 1286 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency, 1287 u16 to_multiplier) 1288 { 1289 u16 max_latency; 1290 1291 if (min > max || min < 6 || max > 3200) 1292 return -EINVAL; 1293 1294 if (to_multiplier < 10 || to_multiplier > 3200) 1295 return -EINVAL; 1296 1297 if (max >= to_multiplier * 8) 1298 return -EINVAL; 1299 1300 max_latency = (to_multiplier * 8 / max) - 1; 1301 if (latency > 499 || latency > max_latency) 1302 return -EINVAL; 1303 1304 return 0; 1305 } 1306 1307 int hci_register_cb(struct hci_cb *hcb); 1308 int hci_unregister_cb(struct hci_cb *hcb); 1309 1310 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, 1311 const void *param, u32 timeout); 1312 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen, 1313 const void *param, u8 event, u32 timeout); 1314 1315 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, 1316 const void *param); 1317 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags); 1318 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb); 1319 1320 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode); 1321 1322 /* ----- HCI Sockets ----- */ 1323 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb); 1324 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb, 1325 int flag, struct sock *skip_sk); 1326 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb); 1327 1328 void hci_sock_dev_event(struct hci_dev *hdev, int event); 1329 1330 #define HCI_MGMT_VAR_LEN BIT(0) 1331 #define HCI_MGMT_NO_HDEV BIT(1) 1332 #define HCI_MGMT_UNTRUSTED BIT(2) 1333 #define HCI_MGMT_UNCONFIGURED BIT(3) 1334 1335 struct hci_mgmt_handler { 1336 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data, 1337 u16 data_len); 1338 size_t data_len; 1339 unsigned long flags; 1340 }; 1341 1342 struct hci_mgmt_chan { 1343 struct list_head list; 1344 unsigned short channel; 1345 size_t handler_count; 1346 const struct hci_mgmt_handler *handlers; 1347 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev); 1348 }; 1349 1350 int hci_mgmt_chan_register(struct hci_mgmt_chan *c); 1351 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c); 1352 1353 /* Management interface */ 1354 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR)) 1355 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \ 1356 BIT(BDADDR_LE_RANDOM)) 1357 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \ 1358 BIT(BDADDR_LE_PUBLIC) | \ 1359 BIT(BDADDR_LE_RANDOM)) 1360 1361 /* These LE scan and inquiry parameters were chosen according to LE General 1362 * Discovery Procedure specification. 1363 */ 1364 #define DISCOV_LE_SCAN_WIN 0x12 1365 #define DISCOV_LE_SCAN_INT 0x12 1366 #define DISCOV_LE_TIMEOUT 10240 /* msec */ 1367 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */ 1368 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04 1369 #define DISCOV_BREDR_INQUIRY_LEN 0x08 1370 #define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */ 1371 1372 int mgmt_new_settings(struct hci_dev *hdev); 1373 void mgmt_index_added(struct hci_dev *hdev); 1374 void mgmt_index_removed(struct hci_dev *hdev); 1375 void mgmt_set_powered_failed(struct hci_dev *hdev, int err); 1376 int mgmt_powered(struct hci_dev *hdev, u8 powered); 1377 int mgmt_update_adv_data(struct hci_dev *hdev); 1378 void mgmt_discoverable_timeout(struct hci_dev *hdev); 1379 void mgmt_adv_timeout_expired(struct hci_dev *hdev); 1380 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key, 1381 bool persistent); 1382 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn, 1383 u32 flags, u8 *name, u8 name_len); 1384 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr, 1385 u8 link_type, u8 addr_type, u8 reason, 1386 bool mgmt_connected); 1387 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, 1388 u8 link_type, u8 addr_type, u8 status); 1389 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 1390 u8 addr_type, u8 status); 1391 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure); 1392 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1393 u8 status); 1394 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1395 u8 status); 1396 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 1397 u8 link_type, u8 addr_type, u32 value, 1398 u8 confirm_hint); 1399 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1400 u8 link_type, u8 addr_type, u8 status); 1401 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1402 u8 link_type, u8 addr_type, u8 status); 1403 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 1404 u8 link_type, u8 addr_type); 1405 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1406 u8 link_type, u8 addr_type, u8 status); 1407 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1408 u8 link_type, u8 addr_type, u8 status); 1409 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr, 1410 u8 link_type, u8 addr_type, u32 passkey, 1411 u8 entered); 1412 void mgmt_auth_failed(struct hci_conn *conn, u8 status); 1413 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status); 1414 void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status); 1415 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class, 1416 u8 status); 1417 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status); 1418 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 1419 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags, 1420 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len); 1421 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 1422 u8 addr_type, s8 rssi, u8 *name, u8 name_len); 1423 void mgmt_discovering(struct hci_dev *hdev, u8 discovering); 1424 bool mgmt_powering_down(struct hci_dev *hdev); 1425 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent); 1426 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk); 1427 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk, 1428 bool persistent); 1429 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr, 1430 u8 bdaddr_type, u8 store_hint, u16 min_interval, 1431 u16 max_interval, u16 latency, u16 timeout); 1432 void mgmt_reenable_advertising(struct hci_dev *hdev); 1433 void mgmt_smp_complete(struct hci_conn *conn, bool complete); 1434 1435 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency, 1436 u16 to_multiplier); 1437 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand, 1438 __u8 ltk[16], __u8 key_size); 1439 1440 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr, 1441 u8 *bdaddr_type); 1442 1443 #define SCO_AIRMODE_MASK 0x0003 1444 #define SCO_AIRMODE_CVSD 0x0000 1445 #define SCO_AIRMODE_TRANSP 0x0003 1446 1447 #endif /* __HCI_CORE_H */ 1448